Vergelyking tussen die kodlingmot (Cydia pomonella) se fenologiese ontwikkeling in 'n chemies behandelde-, onbehandelde- en organiese boord in die Wes-Kaap

[摘要] ENGLISH ABSTRACT:Codling moth, Cydia pomonella (L.), infested fluit were collected in a sprayed,unsprayed and an organic orchard. The time of emergence was monitored to see ifthere was selection for a delayed emergence caused by different treatments. Mothsfrom fruit collected in the sprayed and unsprayed orchards in Desember 2001, had apeak emergence during January 2002 and a smaller peak during February 2002.Moths from fruit collected during February 2002 from an organic orchard, had a peakemergence during February 2002 and an extended emergence from diapause untilJanuary 2003. Moths from fluit collected during March 2002 had a peak emergenceduring November 2002 with an extended emergence in the sprayed orchards untilJanuary 2003. Delayed emergence from diapause was observed. Not all the mothsfrom diapause emerged during the first flight, but overlapped with the second flight inDecember and January.

[发布机构] Stellenbosch University